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[Bug ld/18829] Add the ability to sort PLT entries
From: |
gregory.d.bentley at intel dot com |
Subject: |
[Bug ld/18829] Add the ability to sort PLT entries |
Date: |
Fri, 21 Aug 2015 18:45:25 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=18829
--- Comment #7 from Greg Bentley <gregory.d.bentley at intel dot com> ---
(In reply to H.J. Lu from comment #6)
> (In reply to Greg Bentley from comment #5)
> > (In reply to Alexander Monakov from comment #3)
> > > As I understand, for further benefit you should sort the GOT as well as
> > > PLT
> > > based on the same idea — and that will save you some dcache misses even
> > > with
> > > -fno-plt.
> >
> > That's correct. However, I didn't see a noticeable difference with my
> > workload from improving the GOT cache behavior. My previous patch resulted
> > in sorted GOTs except when -z bndplt was used. I've fixed that in the patch
> > just uploaded.
>
> I want to avoid adding changes like that unless GCC -fno-plt
> option isn't sufficient.
A colleague of mine is testing -fno-plt. I'll report back with the results
soon.
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- [Bug ld/18829] New: Add the ability to sort PLT entries, gregory.d.bentley at intel dot com, 2015/08/14
- [Bug ld/18829] Add the ability to sort PLT entries, hjl.tools at gmail dot com, 2015/08/14
- [Bug ld/18829] Add the ability to sort PLT entries, gregory.d.bentley at intel dot com, 2015/08/14
- [Bug ld/18829] Add the ability to sort PLT entries, jsweval at arxan dot com, 2015/08/17
- [Bug ld/18829] Add the ability to sort PLT entries, amonakov at gmail dot com, 2015/08/21
- [Bug ld/18829] Add the ability to sort PLT entries, gregory.d.bentley at intel dot com, 2015/08/21
- [Bug ld/18829] Add the ability to sort PLT entries, gregory.d.bentley at intel dot com, 2015/08/21
- [Bug ld/18829] Add the ability to sort PLT entries, hjl.tools at gmail dot com, 2015/08/21
- [Bug ld/18829] Add the ability to sort PLT entries,
gregory.d.bentley at intel dot com <=